Share 'Disappointing Discs?'

Anyone here ever throw a disc that they were totally disappointed in? I played a round with an Avenger SS in FLX plastic and I thought it was awful. I just could not get it to fly the way it was intended. It was a bummer because I usually love Discraft drivers. To me this one was a dud.
You can read the review on my blog if you have the time.
Any thoughts?